Wren uses a separate advertising agency, a unit of BBDO Worldwide, to cater to the automaker.

FORBES: What advertising downturn?

Text-heavy magazine ads from Omnicom ad agency BBDO Detroit will explain how small diesels work.

FORBES: Vehicle for Change?

That slogan (created by BBDO in 1974) told us not to accept that any longer!

FORBES: Having It Your Way Is Not Always The Best Way

Ads from bbdo, a unit of ad giant Omnicom Group, emphasize E-Trade's mutual funds, money-market accounts and research capabilities.

FORBES: Magazine Article

Working with Omnicom agency BBDO, New York, Motorola Solutions will tap trade- and b2b-focused print, online and direct marketing to get its message out.

FORBES: Motorola "Rises To The Moment" In New B2B Campaign

Competitors are quick to point out that Omnicom's agencies might lose cachet when such creative types as Allen Rosenshine, BBDO's CEO, retire in a few years.

FORBES: What advertising downturn?

Ads from bbdo, a unit of ad giant Omnicom Group (nyse: OMC - news - people ), emphasize E-Trade's mutual funds, money-market accounts and research capabilities.

FORBES: No More Monkeying Around

But like in advertising where the big corporate agencies such as BBDO and WPP are still around, they do have a lot more competition today than they did just a short time ago.

FORBES: How New News Is Challenging Old News In India